@coderyo/renderer-webgl

WebGL2 chart renderer for TradView V2.

Phase beta (V2-R5–R8)

• WebGLPaneOrchestrator — main + volume + MACD/RSI/KDJ + MA/EMA/BOLL overlays (V2-R6)
• LOD via lodDecimateBars + maxRenderPoints (V2-R8)
• Perf: getRenderPerfStats(), runRenderBenchmark(); pnpm bench:webgl; demo ?bench=1

Phase gamma (V2-R9–R11)

• createChartCoordinateMapper — time/price ↔ overlay pixels on the main pane
• WebGLDrawingLayer + drawings: { enabled: true } on the orchestrator (setDrawingTool)
• Demo drawing toolbar on apps/playground/webgl-demo.html
• check:webgl-size cap 170 KB raw (R11 +50 KB)

Not wired to @coderyo/core until V2-R12.

Usage

import { WebGLPaneOrchestrator } from '@coderyo/renderer-webgl';

const chart = new WebGLPaneOrchestrator({ debug: false });
chart.mount(document.getElementById('chart')!);
chart.setBars(bars);
// ResizeObserver keeps layout in sync; call chart.destroy() on teardown.

Tests

pnpm --filter @coderyo/renderer-webgl test
pnpm check:webgl-size   # dist/index.js ≤ 170 KB raw (after build)

CI policy (phase_alpha): Viewport, price-scale, interaction, and export allowlist run under happy-dom on every pnpm test. WebGL GPU paths (webgl-integration.test.ts) require a browser with WebGL2 — they are skipped in default CI; validate locally or in a future browser job before rc cuts.

Package version stays 1.1.x until VERSION=2.0.0-rc.N (monorepo sync-versions); API is alpha until then.